我如何在Kotlin的Android应用上发布文本和图片？

Question

我想从一个Android应用程序推文和图片。

我可以把一个图片放在一个应用程序的屏幕上推特，而应用程序可以通过一个按钮打开推特表单。

它只显示空白的tweet表单。

我如何将这些文字和图像从Android应用程序移动到tweet表单？

mainactivity.kt

package com.example.tweets

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.Toast
import android.content.Intent
import android.net.Uri
import android.util.Log
import androidx.core.app.ShareCompat
import java.io.File
import android.R.attr.path
import android.graphics.BitmapFactory
import kotlinx.android.synthetic.main.activity_main.*
import androidx.core.app.ComponentActivity.ExtraData
import androidx.core.content.ContextCompat.getSystemService
import android.icu.lang.UCharacter.GraphemeClusterBreak.T
import java.io.IOException


class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        try {resources.assets.open("sample.jpg").use { istream ->
            val bitmap = BitmapFactory.decodeStream(istream)
            sample.setImageBitmap(bitmap)
        }
        } catch (e: IOException) {
            e.printStackTrace()
        }


        val intentTweetButton: Button = findViewById(R.id.intentTweetButton)
        intentTweetButton.setOnClickListener {
            shareTwitter()
        }

        /*

        val shareCompatButton: Button = findViewById(R.id.shareCompatButton)
        shareCompatButton.setOnClickListener {
            shareCompat()
        }
        */
    }

    fun shareTwitter() {
        val message = "shareTwitter intent tweet"
        val bmpUri = Uri.parse("file://$path")
        try {
            val sharingIntent = Intent(Intent.ACTION_SEND)
            sharingIntent.setClassName("com.twitter.android", "com.twitter.android.PostActivity")
            val imageUri = Uri.parse("sample.jpg")
            sharingIntent.putExtra(Intent.EXTRA_TEXT, "Hello")
            sharingIntent.putExtra(Intent.EXTRA_STREAM, imageUri)
            sharingIntent.type = "image/jpeg"
            sharingIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
            startActivity(sharingIntent)
        }
        catch (e: Exception) {
            Log.e("In Exception", "Comes here")
            val i = Intent()
            i.putExtra(Intent.EXTRA_TEXT, message)
            i.action = Intent.ACTION_VIEW
            i.data = Uri.parse("https://mobile.twitter.com/compose/tweet")
            startActivity(i)
        }

    }

    /*

    fun shareCompat() {
        val message = "shareCompat"
        val builder = ShareCompat.IntentBuilder.from(this)
        builder.setChooserTitle("Choose App")
        builder.setText(message)
        builder.setType("text/plain")
        builder.addStream(Uri.fromFile(File("sample.jpg")))
        builder.setType("image/jpg")
        builder.startChooser()
    }
     */
}

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/sample"
        android:scaleType="centerCrop"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:contentDescription="@string/img_description"
        tools:ignore="InvalidId" />

    <Button
        android:id="@+id/intentTweetButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:text="intent tweet"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <!--
    <Button
        android:id="@+id/shareCompatButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:text="ShareCompat"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/intentTweetButton" />
     -->

</androidx.constraintlayout.widget.ConstraintLayout>

我尝试使用share compat而不是intent，但也不起作用。

此外，share compat仅适用于在手机上下载了Twitter应用程序的用户，所以我更喜欢使用intent从Android应用程序中发布文本和图像。

该图像位于app/assets/sample.jpg上。

Android Studio 3.5.3

Kotlin插件1.3.50

Answer 1

试试这个

 private void shareTwitter(String message) {
    Intent tweetIntent = new Intent(Intent.ACTION_SEND);
    tweetIntent.putExtra(Intent.EXTRA_TEXT, "This is a Test.");
    tweetIntent.setType("text/plain");

    PackageManager packManager = getPackageManager();
    List<ResolveInfo> resolvedInfoList = packManager.queryIntentActivities(tweetIntent, PackageManager.MATCH_DEFAULT_ONLY);

    boolean resolved = false;
    for (ResolveInfo resolveInfo : resolvedInfoList) {
        if (resolveInfo.activityInfo.packageName.startsWith("com.twitter.android")) {
            tweetIntent.setClassName(
                    resolveInfo.activityInfo.packageName,
                    resolveInfo.activityInfo.name);
            resolved = true;
            break;
        }
    }
    if (resolved) {
        startActivity(tweetIntent);
    } else {
        Intent i = new Intent();
        i.putExtra(Intent.EXTRA_TEXT, message);
        i.setAction(Intent.ACTION_VIEW);
        i.setData(Uri.parse("https://twitter.com/intent/tweet?text=" + urlEncode(message)));
        startActivity(i);
        Toast.makeText(this, "Twitter app isn't found", Toast.LENGTH_LONG).show();
    }
}

private String urlEncode(String s) {
    try {
        return URLEncoder.encode(s, "UTF-8");
    } catch (UnsupportedEncodingException e) {
        Log.wtf(TAG, "UTF-8 should always be supported", e);
        return "";
    }
}